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What is API 608 Standard?

API 608 valve standard “Metal Ball Valves – Flanged, Threaded and Welding Ends” is a valve standard that covers additional requirements for ball valves that are in full conformance to the requirements of ASME B16.34. This standard covers flanged and butt-welding end valves in standard classes 150, 300, and 600 and socket welding and threaded end valves in standard classes 150, 300, 600, and 800.

Requirements for a ball valve to comply with API 608 include the following:

• Valve pressure-temperature rating shall be the lesser of the shell rating or the seat rating.
• Full and reduced port ball valves must meet minimum bore diameter requirements.
• The stem must be electrically “grounded” to the body (anti-static device).
• Hollow ball components are not allowed (unless specifically accepted by the customer).
• Stem torsional strength must be at least twice the maximum operating torque (Safety Factor = 2).
• Torsional failure of the stem must be external to the pressure-containing envelope and stem packing.

API 608 is a standard that exceeds the requirements set by ASME B16.34, thereby offering a superior level of performance for the rigorous requirements of the petrochemical, power, oil, gas, and water treatment markets.

API 608 range incorporates a number of useful features including increased thickness and an oversized driving train. These characteristics, together with construction from high-performance materials, make these valves ideal for severe and demanding environments and particularly reliable in actuation applications.

What is an API 608 Ball Valve?

API 608 ball valve is used for the petrochemical industry pipeline media opening or cutting off, which is under the environment such as high temperature and high pressure, inflammable and explosive, corrosive and continuous operation, where require more requirements on valve sealing, material, corrosion.

Product Description:

• A ball valve with lever operated.
• Floating ball, 2-pc body, side entry, full bore, 
• Anti-blow-out proof shaft, venting, and drain plug.
• Fire Safe Design: API 607.
• Anti-static device.
• Valve design: API 608/API 6D.
• End connection: RF flange as per AMSE B16.5.
• Face to face dimension as per ASME B16.10.
• Testing & Inspection: API 598, leakage A.

API 608 Ball Valve Size & Pressure Range

RATING ->		150			300			600
SIZE	STD	HT	CRYO	STD	HT	CRYO	STD	HT	CRYO
1/2″	•	•	•	•	•	•	•	•	•
3/4″	•	•	•	•	•	•	•	•	•
1″	•	•	•	•	•	•	•	•	•
1″ 1/2	•	•	•	•	•	•	•	•	•
2″	•	•	•	•	•	•	•	•	•
3″	•	•	•	•	•	•	•	•	•
4″	•	•	•	•	•	•	•	•	•
6″	•		•	•		•	•		•

Applications of API 608 Ball Valve

API 608 ball valves can be used in a variety of markets and applications:

• Oil & natural gas markets
• Petrochemical
• Power
• Water treatment

API 608 ball valve is used for the petrochemical industry pipeline media opening or cutting off, which is under the environment such as high temperature and high pressure, inflammable and explosive, corrosive and continuous operation, where require more requirements on valve sealing, material, corrosion. API 608 ball valve has a fixed ball structure and floating ball structure and mainly floating ball structure.

Inspection and Testing of API 608 Ball Valves

API 608 provides for the inspection, inspection, and pressure testing of ball valves in accordance with API 598” inspection and testing of valves”. As a supplement to ASME B16.34, API 608 ball valves shall also fully meet ASME B16.34” inspection and test requirements”. ASME B16.34 and API 598 are basic specifications for general-purpose valves.

Installation and Maintenance of API 608 Ball Valves

API 608 ball valves can be installed in the factory, easy to store and transport. API 6D ball valve is used for long-distance oil and gas pipeline, with a large diameter and harsh environment, and daily maintenance needs to be strengthened. The API 6D ball valve is difficult to replace and has a high maintenance cost due to factors such as caliber, buried installation, and welding connection with pipelines. Therefore, the API 6D ball valve of the long-distance pipeline requires higher safety reliability, tightness, and strength than API 608 ball valve to ensure long-term safe and reliable operation of the long-distance pipeline.

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